Well, I know at least 360 people will go home with The Orphanmaster. That is because I have been summoned into the offices of my publisher to autograph 360 copies of the novel. The books will be sent to stores that have already ordered them.
How does one produce 360 signatures? Rapidly and with gusto. My experience with signing many fewer copies on other occasions is that you have to make sure to hold your fingers loosely around the pen. Keep a loose wrist as well. And it has to be a pen with free flowing ink, but not messy — the Rollerball is a good one. Though a Bic will do fine in a pinch.
Be good to those who care about the resale value of the work: sign on the title page. Include the date.
Then scrawl your name as large as you can.